Users may be unable to join town halls in Microsoft Teams using iOS 26.5 version and get an error message
ID: TM1317239
Issue type: Incident
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Impacted services
Microsoft Teams
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Details
Title: Users may be unable to join town halls in Microsoft Teams using iOS 26.5 version and get an error message
User impact: Users may have been unable to join town halls in Microsoft Teams using iOS 26.5 version and received an error message.
Final status: The fix deployment completed and after a period of monitoring, we confirmed impact is remediated.
Scope of impact: Any user attempting to join town halls in Microsoft Teams using iOS 26.5 version may be affected by this issue. This section may be updated as our investigation continues.
Start time: Tuesday, May 19, 2026, at 4:17 AM UTC
End time: Friday, May 22, 2026, at 8:15 PM UTC
Root cause: A recent third-party service update to iOS 26.5 caused compatibility issues.
Next steps:
- To help prevent similar impact in the future, we're further working with the third-party service to understand how this update caused impact.
This is the final update for the event.
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